Xref: news2.mv.net comp.os.msdos.djgpp:4022
From: watcom353 AT aol DOT com (Watcom353)
Newsgroups: comp.os.msdos.djgpp
Subject: graphics
Date: 19 May 1996 11:28:37 -0400
Organization: America Online, Inc. (1-800-827-6364)
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

I use int 10h to set the video mode like this:

union REGS regs;
regs.w.ax=mode;
int386(0x10,&regs,&regs);

That works fine. (I know this because when I use printf, the letters are
really big)
But I can't get a pixel on the screen.  I've tried
unsigned char *scr=0xa000;
with many different amounts of 0s after the a.  But I always get a GPF. 
How can I write to the screen.  (Any suggestions for setting the mode
without bios would also be appreciated)